java IO流 将一张图片拷贝到另外一个地方

import java.io.File;
import java.io.FileInputStream;

import java.io.FileOutputStream;
import java.io.IOException;

public class DemoCopy {

/**
 * @param args
 * @throws IOException 
 */
public static void main(String[] args) throws IOException {
    // TODO Auto-generated method stub
    copy();
    
}
public static void copy() throws IOException{
    
    //1.读取数据输入字节流
    //找到图片路径
    File file  = new File("D:\\img\\01.jpg");
    
    FileInputStream inputStream = new FileInputStream(file);
    //2.写入数据输出字节流
    File file1  = new File("D:\\01.jpg");
    FileOutputStream outputStream = new FileOutputStream(file1);
    
    byte [] b = new byte[1024];
    
    
    
    while (inputStream.read(b)!=-1) {
        
        outputStream.write(b);
        
    }
    //关闭流  关闭流原则：先开后关，后开先关。
    
    outputStream.close();
    inputStream.close();
      
    
    
}

}